What makes capital cities the best places to live?

Eurofound (2020), What makes capital cities the best places to live?, European Quality of Life Survey
2016 series, Publications Office of the European Union, Luxembourg.

"Quality of life data show that in most countries, the capital city has advantages compared to the regions outside the capital. In light of the continued growth of capital city populations and the concentration of resources within them, this policy brief explores the source of the advantages of capital cities in quality of life. Are these advantages mostly related to specific demographics that
these cities nurture and attract? Or do these advantages stem from opportunities that major cities provide due to their scale and economic growth? The policy brief aims to clarify why policy should focus on both the economy and society when it comes to advancing economic, social and territorial cohesion."